无机材料学报

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TiC-Ni-Mo复合材料的燃烧合成研究

汪建利; 张幸红+; 韩杰才+; 赫晓东+; 杜善义+   

  1. 安徽机电学院; 安徽 241000; 哈尔滨工业大学; 哈尔滨 150001
  • 收稿日期:1998-10-20 修回日期:1998-11-16 出版日期:1999-06-20 网络出版日期:1999-06-20

Research on TiC-Ni-Mo Composites by Combustion Synthesis

WANG Jian-Li; ZHANG Xing-Hong+; HAN Jie-Cai+; He Xiao-Dong+; DU Shan-Yi +   

  1. Anhui Institute of Mechanics and Electronics Wuhu 241000 China; +Center for Composite Materals; Harbin Institute of Technology Harbin 150001 China
  • Received:1998-10-20 Revised:1998-11-16 Published:1999-06-20 Online:1999-06-20

摘要: 通过自蔓延高温燃烧合成结合准热等静压(SHS/PHIP)方法得到TiC-Ni-Mo复合材料TH20和TH30.研究了工艺过程参数对材料致密性的影响.得到了最佳的工艺规范.SHS反应产物主要存在两相:TiC相和Ni的固溶体相,球形的TiC颗粒相被包围在近乎网状结构的Ni合金粘结相当中.TiC颗粒与粘结相界面结合良好,反应产物中有少量游离碳的存在,TH20和TH30的抗弯强度同传统方法生产的相近成分的材料相比比较接近.

关键词: 自蔓延高温燃烧合成, 准热等静压, 金属陶瓷, 工艺参数

Abstract: Dense TiC-Ni cermets TH20 and TH30 were produced by self-propagating high-temperature synthesis and pseudo heat isostatic pressing. The influence of process parameters
on densities was investigated. Cermet mainly consisted of TiC particles and Ni-binder. TiC skeletal structure was enveloped by continuous Ni-binder phase. The interfacial bonding
between TiC and Ni was found to be of a good quality. High dislocation existed near the interface and inside the Ni-binder phase, some residual carbon exists in
reaction product. Meanwhile transverse rupture strengths of TH20 and TH30 were both close to those produced by conventional technology.

Key words: SHS, pseudo heat isostatic pressing, TiC-Ni cermets, processing parameters

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